📏 Trigonometry Calculator

Free online trigonometry calculator. Compute sin, cos, tan, csc, sec, and cot values. Supports both degrees and radians. Pure frontend math tool.

Angle value

Degrees Radians

How to Use

Enter Your Angle
Enter an angle value. Choose between degrees and radians mode depending on your needs.
Calculate
Click Calculate to instantly compute all six trigonometric functions for the given angle.
Read the Results
All six trig values (sin, cos, tan, csc, sec, cot) are displayed in a clear grid for easy reference.

FAQ

What are the six trigonometric functions?

Sine (sin), Cosine (cos), Tangent (tan), Cosecant (csc=1/sin), Secant (sec=1/cos), and Cotangent (cot=1/tan). They relate angles to side ratios in right triangles.

What is the difference between degrees and radians?

Degrees divide a circle into 360 parts. Radians use the arc length, where 2π radians = 360° (a full circle). π radians = 180°.

When is tan undefined?

Tan is undefined when cos = 0, i.e., at 90° (π/2) and 270° (3π/2) in standard orientation. Similarly, csc and sec have points where they're undefined.

What is the unit circle?

The unit circle is a circle of radius 1 centered at the origin. Any angle's trig values can be read directly from its intersection point with the circle.

Where is trigonometry used?

Trigonometry is used in: navigation, engineering, physics (waves, oscillations), computer graphics (rotation, 3D rendering), astronomy, and architecture.